1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2018 Chelsio Communications.
6 #include <rte_ethdev_driver.h>
7 #include <rte_ethdev_pci.h>
8 #include <rte_malloc.h>
16 * Figure out how many Ports and Queue Sets we can support. This depends on
17 * knowing our Virtual Function Resources and may be called a second time if
18 * we fall back from MSI-X to MSI Interrupt Mode.
20 static void size_nports_qsets(struct adapter *adapter)
22 struct vf_resources *vfres = &adapter->params.vfres;
23 unsigned int ethqsets, pmask_nports;
26 * The number of "ports" which we support is equal to the number of
27 * Virtual Interfaces with which we've been provisioned.
29 adapter->params.nports = vfres->nvi;
30 if (adapter->params.nports > MAX_NPORTS) {
31 dev_warn(adapter->pdev_dev, "only using %d of %d maximum"
32 " allowed virtual interfaces\n", MAX_NPORTS,
33 adapter->params.nports);
34 adapter->params.nports = MAX_NPORTS;
38 * We may have been provisioned with more VIs than the number of
39 * ports we're allowed to access (our Port Access Rights Mask).
40 * This is obviously a configuration conflict but we don't want to
41 * do anything silly just because of that.
43 pmask_nports = hweight32(adapter->params.vfres.pmask);
44 if (pmask_nports < adapter->params.nports) {
45 dev_warn(adapter->pdev_dev, "only using %d of %d provissioned"
46 " virtual interfaces; limited by Port Access Rights"
47 " mask %#x\n", pmask_nports, adapter->params.nports,
48 adapter->params.vfres.pmask);
49 adapter->params.nports = pmask_nports;
53 * We need to reserve an Ingress Queue for the Asynchronous Firmware
56 * For each Queue Set, we'll need the ability to allocate two Egress
57 * Contexts -- one for the Ingress Queue Free List and one for the TX
60 ethqsets = vfres->niqflint - 1;
61 if (vfres->nethctrl != ethqsets)
62 ethqsets = min(vfres->nethctrl, ethqsets);
63 if (vfres->neq < ethqsets * 2)
64 ethqsets = vfres->neq / 2;
65 if (ethqsets > MAX_ETH_QSETS)
66 ethqsets = MAX_ETH_QSETS;
67 adapter->sge.max_ethqsets = ethqsets;
69 if (adapter->sge.max_ethqsets < adapter->params.nports) {
70 dev_warn(adapter->pdev_dev, "only using %d of %d available"
71 " virtual interfaces (too few Queue Sets)\n",
72 adapter->sge.max_ethqsets, adapter->params.nports);
73 adapter->params.nports = adapter->sge.max_ethqsets;
77 static int adap_init0vf(struct adapter *adapter)
82 err = t4vf_fw_reset(adapter);
84 dev_err(adapter->pdev_dev, "FW reset failed: err=%d\n", err);
89 * Grab basic operational parameters. These will predominantly have
90 * been set up by the Physical Function Driver or will be hard coded
91 * into the adapter. We just have to live with them ... Note that
92 * we _must_ get our VPD parameters before our SGE parameters because
93 * we need to know the adapter's core clock from the VPD in order to
94 * properly decode the SGE Timer Values.
96 err = t4vf_get_dev_params(adapter);
98 dev_err(adapter->pdev_dev, "unable to retrieve adapter"
99 " device parameters: err=%d\n", err);
103 err = t4vf_get_vpd_params(adapter);
105 dev_err(adapter->pdev_dev, "unable to retrieve adapter"
106 " VPD parameters: err=%d\n", err);
110 adapter->pf = t4vf_get_pf_from_vf(adapter);
111 err = t4vf_sge_init(adapter);
113 dev_err(adapter->pdev_dev, "error in sge init\n");
117 /* If we're running on newer firmware, let it know that we're
118 * prepared to deal with encapsulated CPL messages. Older
119 * firmware won't understand this and we'll just get
120 * unencapsulated messages ...
122 param = V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_PFVF) |
123 V_FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_PFVF_CPLFW4MSG_ENCAP);
125 t4vf_set_params(adapter, 1, ¶m, &val);
128 * Grab our Virtual Interface resource allocation, extract the
129 * features that we're interested in and do a bit of sanity testing on
132 err = t4vf_get_vfres(adapter);
134 dev_err(adapter->pdev_dev, "unable to get virtual interface"
135 " resources: err=%d\n", err);
140 * Check for various parameter sanity issues.
142 if (adapter->params.vfres.pmask == 0) {
143 dev_err(adapter->pdev_dev, "no port access configured\n"
147 if (adapter->params.vfres.nvi == 0) {
148 dev_err(adapter->pdev_dev, "no virtual interfaces configured/"
154 * Initialize nports and max_ethqsets now that we have our Virtual
155 * Function Resources.
157 size_nports_qsets(adapter);
158 adapter->flags |= FW_OK;
162 int cxgbevf_probe(struct adapter *adapter)
164 struct port_info *pi;
169 t4_os_lock_init(&adapter->mbox_lock);
170 TAILQ_INIT(&adapter->mbox_list);
171 err = t4vf_prep_adapter(adapter);
175 if (!is_t4(adapter->params.chip)) {
176 adapter->bar2 = (void *)adapter->pdev->mem_resource[2].addr;
177 if (!adapter->bar2) {
178 dev_err(adapter, "cannot map device bar2 region\n");
184 err = adap_init0vf(adapter);
186 dev_err(adapter, "%s: Adapter initialization failed, error %d\n",
191 pmask = adapter->params.vfres.pmask;
192 for_each_port(adapter, i) {
193 const unsigned int numa_node = rte_socket_id();
194 char name[RTE_ETH_NAME_MAX_LEN];
195 struct rte_eth_dev *eth_dev;
200 port_id = ffs(pmask) - 1;
201 pmask &= ~(1 << port_id);
203 snprintf(name, sizeof(name), "%s_%d",
204 adapter->pdev->device.name, i);
207 /* First port is already allocated by DPDK */
208 eth_dev = adapter->eth_dev;
213 * now do all data allocation - for eth_dev structure,
214 * and internal (private) data for the remaining ports
217 /* reserve an ethdev entry */
218 eth_dev = rte_eth_dev_allocate(name);
223 eth_dev->data->dev_private =
224 rte_zmalloc_socket(name, sizeof(struct port_info),
225 RTE_CACHE_LINE_SIZE, numa_node);
226 if (!eth_dev->data->dev_private)
230 pi = (struct port_info *)eth_dev->data->dev_private;
231 adapter->port[i] = pi;
232 pi->eth_dev = eth_dev;
233 pi->adapter = adapter;
234 pi->xact_addr_filt = -1;
235 pi->port_id = port_id;
238 pi->eth_dev->device = &adapter->pdev->device;
239 pi->eth_dev->dev_ops = adapter->eth_dev->dev_ops;
240 pi->eth_dev->tx_pkt_burst = adapter->eth_dev->tx_pkt_burst;
241 pi->eth_dev->rx_pkt_burst = adapter->eth_dev->rx_pkt_burst;
243 rte_eth_copy_pci_info(pi->eth_dev, adapter->pdev);
244 pi->eth_dev->data->mac_addrs = rte_zmalloc(name,
246 if (!pi->eth_dev->data->mac_addrs) {
247 dev_err(adapter, "%s: Mem allocation failed for storing mac addr, aborting\n",
254 if (adapter->flags & FW_OK) {
255 err = t4vf_port_init(adapter);
257 dev_err(adapter, "%s: t4_port_init failed with err %d\n",
263 cfg_queues(adapter->eth_dev);
264 print_adapter_info(adapter);
265 print_port_info(adapter);
270 for_each_port(adapter, i) {
271 pi = adap2pinfo(adapter, i);
273 t4_free_vi(adapter, adapter->mbox, adapter->pf,
275 /* Skip first port since it'll be de-allocated by DPDK */
279 if (pi->eth_dev->data->dev_private)
280 rte_free(pi->eth_dev->data->dev_private);
281 rte_eth_dev_release_port(pi->eth_dev);